diff --git a/llvm/include/llvm/IR/Metadata.h b/llvm/include/llvm/IR/Metadata.h
index 2de26c0c1f7c7..959003eff860e 100644
--- a/llvm/include/llvm/IR/Metadata.h
+++ b/llvm/include/llvm/IR/Metadata.h
@@ -759,18 +759,18 @@ class MDString : public Metadata {
 /// memory access used by the alias-analysis infrastructure.
 struct AAMDNodes {
   explicit AAMDNodes() = default;
-  explicit AAMDNodes(MDNode *T, MDNode *TS, MDNode *S, MDNode *N)
-      : TBAA(T), TBAAStruct(TS), Scope(S), NoAlias(N) {}
+  explicit AAMDNodes(MDNode *T, MDNode *TS, MDNode *S, MDNode *N, MDNode *NAS)
+      : TBAA(T), TBAAStruct(TS), Scope(S), NoAlias(N), NoAliasAddrSpace(NAS) {}
 
   bool operator==(const AAMDNodes &A) const {
     return TBAA == A.TBAA && TBAAStruct == A.TBAAStruct && Scope == A.Scope &&
-           NoAlias == A.NoAlias;
+           NoAlias == A.NoAlias && NoAliasAddrSpace == A.NoAliasAddrSpace;
   }
 
   bool operator!=(const AAMDNodes &A) const { return !(*this == A); }
 
   explicit operator bool() const {
-    return TBAA || TBAAStruct || Scope || NoAlias;
+    return TBAA || TBAAStruct || Scope || NoAlias || NoAliasAddrSpace;
   }
 
   /// The tag for type-based alias analysis.
@@ -785,6 +785,9 @@ struct AAMDNodes {
   /// The tag specifying the noalias scope.
   MDNode *NoAlias = nullptr;
 
+  /// The tag specifying the noalias address space scope.
+  MDNode *NoAliasAddrSpace = nullptr;
+
   // Shift tbaa Metadata node to start off bytes later
   LLVM_ABI static MDNode *shiftTBAA(MDNode *M, size_t off);
 
@@ -806,6 +809,8 @@ struct AAMDNodes {
     Result.TBAAStruct = Other.TBAAStruct == TBAAStruct ? TBAAStruct : nullptr;
     Result.Scope = Other.Scope == Scope ? Scope : nullptr;
     Result.NoAlias = Other.NoAlias == NoAlias ? NoAlias : nullptr;
+    Result.NoAliasAddrSpace =
+        Other.NoAliasAddrSpace == NoAliasAddrSpace ? NoAliasAddrSpace : nullptr;
     return Result;
   }
 
@@ -818,6 +823,7 @@ struct AAMDNodes {
         TBAAStruct ? shiftTBAAStruct(TBAAStruct, Offset) : nullptr;
     Result.Scope = Scope;
     Result.NoAlias = NoAlias;
+    Result.NoAliasAddrSpace = NoAliasAddrSpace;
     return Result;
   }
 
@@ -833,6 +839,7 @@ struct AAMDNodes {
     Result.TBAAStruct = TBAAStruct;
     Result.Scope = Scope;
     Result.NoAlias = NoAlias;
+    Result.NoAliasAddrSpace = NoAliasAddrSpace;
     return Result;
   }
 
@@ -860,12 +867,12 @@ struct AAMDNodes {
 template<>
 struct DenseMapInfo<AAMDNodes> {
   static inline AAMDNodes getEmptyKey() {
-    return AAMDNodes(DenseMapInfo<MDNode *>::getEmptyKey(),
-                     nullptr, nullptr, nullptr);
+    return AAMDNodes(DenseMapInfo<MDNode *>::getEmptyKey(), nullptr, nullptr,
+                     nullptr, nullptr);
   }
 
   static inline AAMDNodes getTombstoneKey() {
-    return AAMDNodes(DenseMapInfo<MDNode *>::getTombstoneKey(),
+    return AAMDNodes(DenseMapInfo<MDNode *>::getTombstoneKey(), nullptr,
                      nullptr, nullptr, nullptr);
   }
 
@@ -873,7 +880,8 @@ struct DenseMapInfo<AAMDNodes> {
     return DenseMapInfo<MDNode *>::getHashValue(Val.TBAA) ^
            DenseMapInfo<MDNode *>::getHashValue(Val.TBAAStruct) ^
            DenseMapInfo<MDNode *>::getHashValue(Val.Scope) ^
-           DenseMapInfo<MDNode *>::getHashValue(Val.NoAlias);
+           DenseMapInfo<MDNode *>::getHashValue(Val.NoAlias) ^
+           DenseMapInfo<MDNode *>::getHashValue(Val.NoAliasAddrSpace);
   }
 
   static bool isEqual(const AAMDNodes &LHS, const AAMDNodes &RHS) {
diff --git a/llvm/lib/Analysis/TypeBasedAliasAnalysis.cpp b/llvm/lib/Analysis/TypeBasedAliasAnalysis.cpp
index c871070eb037e..7025b8354564a 100644
--- a/llvm/lib/Analysis/TypeBasedAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/TypeBasedAliasAnalysis.cpp
@@ -525,6 +525,8 @@ AAMDNodes AAMDNodes::merge(const AAMDNodes &Other) const {
   Result.TBAAStruct = nullptr;
   Result.Scope = MDNode::getMostGenericAliasScope(Scope, Other.Scope);
   Result.NoAlias = MDNode::intersect(NoAlias, Other.NoAlias);
+  Result.NoAliasAddrSpace = MDNode::getMostGenericNoaliasAddrspace(
+      NoAliasAddrSpace, Other.NoAliasAddrSpace);
   return Result;
 }
 
@@ -533,6 +535,8 @@ AAMDNodes AAMDNodes::concat(const AAMDNodes &Other) const {
   Result.TBAA = Result.TBAAStruct = nullptr;
   Result.Scope = MDNode::getMostGenericAliasScope(Scope, Other.Scope);
   Result.NoAlias = MDNode::intersect(NoAlias, Other.NoAlias);
+  Result.NoAliasAddrSpace = MDNode::getMostGenericNoaliasAddrspace(
+      NoAliasAddrSpace, Other.NoAliasAddrSpace);
   return Result;
 }
 
diff --git a/llvm/lib/CodeGen/MachineOperand.cpp b/llvm/lib/CodeGen/MachineOperand.cpp
index 0d251697f2567..c612f8de7b50b 100644
--- a/llvm/lib/CodeGen/MachineOperand.cpp
+++ b/llvm/lib/CodeGen/MachineOperand.cpp
@@ -1273,6 +1273,10 @@ void MachineMemOperand::print(raw_ostream &OS, ModuleSlotTracker &MST,
     OS << ", !noalias ";
     AAInfo.NoAlias->printAsOperand(OS, MST);
   }
+  if (AAInfo.NoAliasAddrSpace) {
+    OS << ", !noalias.addrspace ";
+    AAInfo.NoAliasAddrSpace->printAsOperand(OS, MST);
+  }
   if (getRanges()) {
     OS << ", !range ";
     getRanges()->printAsOperand(OS, MST);
diff --git a/llvm/lib/IR/Metadata.cpp b/llvm/lib/IR/Metadata.cpp
index f0448b06e7e82..0961b3eaf56e3 100644
--- a/llvm/lib/IR/Metadata.cpp
+++ b/llvm/lib/IR/Metadata.cpp
@@ -1778,6 +1778,7 @@ AAMDNodes Instruction::getAAMetadata() const {
     Result.TBAAStruct = Info.lookup(LLVMContext::MD_tbaa_struct);
     Result.Scope = Info.lookup(LLVMContext::MD_alias_scope);
     Result.NoAlias = Info.lookup(LLVMContext::MD_noalias);
+    Result.NoAliasAddrSpace = Info.lookup(LLVMContext::MD_noalias_addrspace);
   }
   return Result;
 }
@@ -1787,6 +1788,7 @@ void Instruction::setAAMetadata(const AAMDNodes &N) {
   setMetadata(LLVMContext::MD_tbaa_struct, N.TBAAStruct);
   setMetadata(LLVMContext::MD_alias_scope, N.Scope);
   setMetadata(LLVMContext::MD_noalias, N.NoAlias);
+  setMetadata(LLVMContext::MD_noalias_addrspace, N.NoAliasAddrSpace);
 }
 
 void Instruction::setNoSanitizeMetadata() {
diff --git a/llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f32.ll b/llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f32.ll
index 340e293cda7b5..6ee0c74863770 100644
--- a/llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f32.ll
+++ b/llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f32.ll
@@ -12,7 +12,7 @@ define amdgpu_ps void @flat_atomic_fadd_f32_no_rtn_intrinsic(ptr %ptr, float %da
   ; GFX942-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
   ; GFX942-NEXT:   [[REG_SEQUENCE:%[0-9]+]]:vreg_64_align2 = REG_SEQUENCE [[COPY]], %subreg.sub0, [[COPY1]], %subreg.sub1
   ; GFX942-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr2
-  ; GFX942-NEXT:   FLAT_ATOMIC_ADD_F32 [[REG_SEQUENCE]], [[COPY2]], 0, 0, implicit $exec, implicit $flat_scr :: (load store syncscope("agent") seq_cst (s32) on %ir.ptr)
+  ; GFX942-NEXT:   FLAT_ATOMIC_ADD_F32 [[REG_SEQUENCE]], [[COPY2]], 0, 0, implicit $exec, implicit $flat_scr :: (load store syncscope("agent") seq_cst (s32) on %ir.ptr, !noalias.addrspace !0)
   ; GFX942-NEXT:   S_ENDPGM 0
   ;
   ; GFX11-LABEL: name: flat_atomic_fadd_f32_no_rtn_intrinsic
@@ -23,7 +23,7 @@ define amdgpu_ps void @flat_atomic_fadd_f32_no_rtn_intrinsic(ptr %ptr, float %da
   ; GFX11-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
   ; GFX11-NEXT:   [[REG_SEQUENCE:%[0-9]+]]:vreg_64 = REG_SEQUENCE [[COPY]], %subreg.sub0, [[COPY1]], %subreg.sub1
   ; GFX11-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr2
-  ; GFX11-NEXT:   FLAT_ATOMIC_ADD_F32 [[REG_SEQUENCE]], [[COPY2]], 0, 0, implicit $exec, implicit $flat_scr :: (load store syncscope("agent") seq_cst (s32) on %ir.ptr)
+  ; GFX11-NEXT:   FLAT_ATOMIC_ADD_F32 [[REG_SEQUENCE]], [[COPY2]], 0, 0, implicit $exec, implicit $flat_scr :: (load store syncscope("agent") seq_cst (s32) on %ir.ptr, !noalias.addrspace !0)
   ; GFX11-NEXT:   S_ENDPGM 0
   %ret = call float @llvm.amdgcn.flat.atomic.fadd.f32.p1.f32(ptr %ptr, float %data)
   ret void
@@ -38,7 +38,7 @@ define amdgpu_ps float @flat_atomic_fadd_f32_rtn_intrinsic(ptr %ptr, float %data
   ; GFX942-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
   ; GFX942-NEXT:   [[REG_SEQUENCE:%[0-9]+]]:vreg_64_align2 = REG_SEQUENCE [[COPY]], %subreg.sub0, [[COPY1]], %subreg.sub1
   ; GFX942-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr2
-  ; GFX942-NEXT:   [[FLAT_ATOMIC_ADD_F32_RTN:%[0-9]+]]:vgpr_32 = FLAT_ATOMIC_ADD_F32_RTN [[REG_SEQUENCE]], [[COPY2]], 0, 1, implicit $exec, implicit $flat_scr :: (load store syncscope("agent") seq_cst (s32) on %ir.ptr)
+  ; GFX942-NEXT:   [[FLAT_ATOMIC_ADD_F32_RTN:%[0-9]+]]:vgpr_32 = FLAT_ATOMIC_ADD_F32_RTN [[REG_SEQUENCE]], [[COPY2]], 0, 1, implicit $exec, implicit $flat_scr :: (load store syncscope("agent") seq_cst (s32) on %ir.ptr, !noalias.addrspace !0)
   ; GFX942-NEXT:   $vgpr0 = COPY [[FLAT_ATOMIC_ADD_F32_RTN]]
   ; GFX942-NEXT:   SI_RETURN_TO_EPILOG implicit $vgpr0
   ;
@@ -50,7 +50,7 @@ define amdgpu_ps float @flat_atomic_fadd_f32_rtn_intrinsic(ptr %ptr, float %data
   ; GFX11-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
   ; GFX11-NEXT:   [[REG_SEQUENCE:%[0-9]+]]:vreg_64 = REG_SEQUENCE [[COPY]], %subreg.sub0, [[COPY1]], %subreg.sub1
   ; GFX11-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr2
-  ; GFX11-NEXT:   [[FLAT_ATOMIC_ADD_F32_RTN:%[0-9]+]]:vgpr_32 = FLAT_ATOMIC_ADD_F32_RTN [[REG_SEQUENCE]], [[COPY2]], 0, 1, implicit $exec, implicit $flat_scr :: (load store syncscope("agent") seq_cst (s32) on %ir.ptr)
+  ; GFX11-NEXT:   [[FLAT_ATOMIC_ADD_F32_RTN:%[0-9]+]]:vgpr_32 = FLAT_ATOMIC_ADD_F32_RTN [[REG_SEQUENCE]], [[COPY2]], 0, 1, implicit $exec, implicit $flat_scr :: (load store syncscope("agent") seq_cst (s32) on %ir.ptr, !noalias.addrspace !0)
   ; GFX11-NEXT:   $vgpr0 = COPY [[FLAT_ATOMIC_ADD_F32_RTN]]
   ; GFX11-NEXT:   SI_RETURN_TO_EPILOG implicit $vgpr0
   %ret = call float @llvm.amdgcn.flat.atomic.fadd.f32.p1.f32(ptr %ptr, float %data)
diff --git a/llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f64.ll b/llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f64.ll
index c82ae2fbcbbdc..bf3697924c22c 100644
--- a/llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f64.ll
+++ b/llvm/test/CodeGen/AMDGPU/GlobalISel/flat-atomic-fadd.f64.ll
@@ -13,7 +13,7 @@ define amdgpu_ps void @flat_atomic_fadd_f64_no_rtn_atomicrmw(ptr %ptr, double %d
   ; GFX90A_GFX942-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr2
   ; GFX90A_GFX942-NEXT:   [[COPY3:%[0-9]+]]:vgpr_32 = COPY $vgpr3
   ; GFX90A_GFX942-NEXT:   [[REG_SEQUENCE1:%[0-9]+]]:vreg_64_align2 = REG_SEQUENCE [[COPY2]], %subreg.sub0, [[COPY3]], %subreg.sub1
-  ; GFX90A_GFX942-NEXT:   FLAT_ATOMIC_ADD_F64 [[REG_SEQUENCE]], [[REG_SEQUENCE1]], 0, 0, implicit $exec, implicit $flat_scr :: (load store syncscope("wavefront") monotonic (s64) on %ir.ptr)
+  ; GFX90A_GFX942-NEXT:   FLAT_ATOMIC_ADD_F64 [[REG_SEQUENCE]], [[REG_SEQUENCE1]], 0, 0, implicit $exec, implicit $flat_scr :: (load store syncscope("wavefront") monotonic (s64) on %ir.ptr, !noalias.addrspace !0)
   ; GFX90A_GFX942-NEXT:   S_ENDPGM 0
   %ret = atomicrmw fadd ptr %ptr, double %data syncscope("wavefront") monotonic, !noalias.addrspace !1, !amdgpu.no.fine.grained.memory !0
   ret void
@@ -30,7 +30,7 @@ define amdgpu_ps double @flat_atomic_fadd_f64_rtn_atomicrmw(ptr %ptr, double %da
   ; GFX90A_GFX942-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr2
   ; GFX90A_GFX942-NEXT:   [[COPY3:%[0-9]+]]:vgpr_32 = COPY $vgpr3
   ; GFX90A_GFX942-NEXT:   [[REG_SEQUENCE1:%[0-9]+]]:vreg_64_align2 = REG_SEQUENCE [[COPY2]], %subreg.sub0, [[COPY3]], %subreg.sub1
-  ; GFX90A_GFX942-NEXT:   [[FLAT_ATOMIC_ADD_F64_RTN:%[0-9]+]]:vreg_64_align2 = FLAT_ATOMIC_ADD_F64_RTN [[REG_SEQUENCE]], [[REG_SEQUENCE1]], 0, 1, implicit $exec, implicit $flat_scr :: (load store syncscope("wavefront") monotonic (s64) on %ir.ptr)
+  ; GFX90A_GFX942-NEXT:   [[FLAT_ATOMIC_ADD_F64_RTN:%[0-9]+]]:vreg_64_align2 = FLAT_ATOMIC_ADD_F64_RTN [[REG_SEQUENCE]], [[REG_SEQUENCE1]], 0, 1, implicit $exec, implicit $flat_scr :: (load store syncscope("wavefront") monotonic (s64) on %ir.ptr, !noalias.addrspace !0)
   ; GFX90A_GFX942-NEXT:   [[COPY4:%[0-9]+]]:vgpr_32 = COPY [[FLAT_ATOMIC_ADD_F64_RTN]].sub0
   ; GFX90A_GFX942-NEXT:   [[COPY5:%[0-9]+]]:vgpr_32 = COPY [[FLAT_ATOMIC_ADD_F64_RTN]].sub1
   ; GFX90A_GFX942-NEXT:   [[V_READFIRSTLANE_B32_:%[0-9]+]]:sreg_32_xm0 = V_READFIRSTLANE_B32 [[COPY4]], implicit $exec